Pitman for die-presses.



PAT'HNTHD MAYw, 1905. H. G. H. WALSH;

A PITMAN HUH DIH PHHssHs. APPLICATION FILED NOV. 18, 1903. RENEWED MAR.30, 1905.

UNiTED FSTATES,

Patented May 16, 1905.

PATENT OFFICE..

HARRY C. H. VALSH, OF CHICAGO, ILLINOIS, ASSIGNOR TO CONSOLI- DATEDPRESS AND TOOL COMPANY, OF CHICAGO, ILLINOIS, A COR- PORATION OFILLINOIS,

PITMAN FOR DIE-PRESSES.

SPECIFICATION forming part of Letters Patent No. 790,015, dated May 16,1905.

Original application filed August 20,1903, Serial No. 170,107. Dividedand this application filed November 16, 1903. Renewed March 30,1905.Serial No. 252,916.

The invention herein shown relates to cer-y tain improvements in theconstruction and operation of die-presses to facilitate the verticaladjustment of the upper or reciprocating die-holder.

It consists in the features of construction which are set out in theclaims.

In the drawings, Figure 1 is a front elevation of a die-pressembodyingmy invention with the lower portion of the supports orstandards broken away. Fig'. 2 isa detail sectionvat the line 2 2 onFig. 1, on a larger scale. Fig. 3 isa detail section at the line 3 3 onFig. 2.

The reciprocating head 1 is operated in the vertical guideways 2 2 by apitman 3, connected to the eccentric wrist 4 of the main shaft 5 betweenthe two bearings 6 6, which said shaft obtains in the upper end of the jaw-frame 7. The lower end of this pitman is connected with thereciprocating head by a ball-and-socket joint, the ball 8, whichterminates the pitman, being retained in a twopart socket 1n the upperend of the head', of which the upper part is the annular element 9,which is screwed into the upper end of the head to afford the upper halfof the socket for retaining the ball. This annular element has a flangeprovided with apertures 10 for a spanner-wrench, with which it may beadjusted to compensate for any Wear or to take up any looseness whichmay arise in the joint, a clamp-screw 11 being provided, as seen in Fig.2 to clamp the thread and secure it against accidental slacking. Thisterminal ball is most conveniently made in a separate piece from theremainder of the pitman and secured thereto byhaving its stem 12 screwedinto the lower end of the intermediate ele- 5o ment or coupling 13 andmade as secure as if it were integral therewith by being screwed uptight to the shoulder 14. The upper element 15 of thepitman ispivoted,by means of a suitable journal-box, on the eccentric wrist' 5 54, as stated, and hasa threaded stem 16, which screws into the upper endof the coupling 13, and a jam-nut 17 is provided on said stem at theupper end of the coupling. Projecting from the upper end of the couplingthere is a 6o pin 18,which takes into a slot 19 in the lower face of thej am-nut 17, said slot extending through an arc sufficient for therelease of the nut from its amming action on the end of the coupling.Both the jam-nut and the coupling are provided with suitable apertures20 for a spanner-wrench or equivalent tool, so that the jam-nut maybeslacked by rotation tothe extent of the slot 19, and the furtherrotation in the direction for slacking will 7o carry the coupling andcause it to be screwed up on the stem 16 to lift the reciprocating head,and the rotation of the coupling in the opposite direction, which may bedone by the spanner engaging the coupling itself in the lower series ofapertures 20, will screw the coupling down on the stem and lower thereciprocating head. The accurate adjustment of the reciprocating headfor-adjusting the punch or die carried thereby with respect to 8o a diein the fixed bed can thus be made quickly and readily at any time whenthe iiywheel is not rotating the shaft.

I claim- 1'. In a die-press, in combination with a re- 8 5 ciprooatinghead, an operating-shaft having an eccentric wrist; a pitman connectingthe head to the wrist'comprising two elements, one connected to the headand the other to thewrist, both connected together for longi- 9o tionabout the aXis of said threaded joint for adjustment thereat.

2. ln a die-press in combination with a reciprocating head; anoperating-shaft having an eccentric wrist; a pitman connecting the headto the Wrist comprising two elements, one connected -to the head and theother to the Wrist, both connected together for longitudinal adjustmentby a threaded joint; and a third element corresponding to one of the tWoelements of said joint for jamming the same; the said third element andthe correspending element of said joint being adapted to permit alimited range of relative movement of said two parts, and having eachmeans for engaging them for rotation.

3. In a die-press, in combination with a reciprocating head, a pitmanfor connecting the operating-shaft with the reciprocating headconsisting of two elements connected together for longitudinaladjustment hy a threaded joint; a jam-nut for securing such joint, saidnut and the adjacent female elcment at said joint having the one a pinand the other a slot in an arc about the axis ofi the joint to receivethe pin to permit a limited range of relative rotation ol said adjacentparts7 said jam-nut and said adjacent element having each means forengaging them for rotation.

In testimony whereof I have hereunto set my hand, in the presence of twowitnesses, at Chicago, Illinois7 this l 1th day of November, A. D. 1903.

HARRY C. H. VALSH. In presence of CHAs. S. BURTON, FRED G. FISCHER.

